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뇌파신호의 동기해석을 위한 위상검출기의 성능비교

Other Titles
 Performance Comparison of Phase Detectors for the Synchronization Analysis of Electroencephalographic Signal 
 김혜진  ;  이지은  ;  유선국 
 Journal of the Institute of Electronics and Information Engineers of Korea (전자공학회논문지), Vol.50(12) : 277-284, 2013 
Journal Title
Journal of the Institute of Electronics and Information Engineers of Korea(전자공학회논문지)
Issue Date
Synchronization ; Phase Detector ; EEG
The analysis of phase synchronization characteristics from EEG signals is important for the understanding of information processing functionality in the brain network. In this paper, wavelet transformation(WT), Hilbert tansformation (HT), complex demodulation (CD) methods having time localization characteristics were applied to real evoked potential data and noise added simulation data with center frequencies corresponding to EEG bands for the estimation performance analysis of phase offset, phase changing point, and interband crosstalk. The WT is the best both in δ, θ, and α band signal decomposition, and in analyzing phase synchronization performance. The CD can be efficiently used in changing point detection under tolerant noise condition because of its abrupt performance degradation over noise endurance level. From experimental observations, the WT is the most suitable in phase synchronization application of EEG signal, and the CD can be affordable in restricted application such as changing point detection for higher bands than δ. Particularly, WT and CD can be used to detect the changing instant of brain function by indirectly estimating the phase changing point.
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Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Medical Engineering (의학공학교실) > 1. Journal Papers
Yonsei Authors
Yoo, Sun Kook(유선국) ORCID logo https://orcid.org/0000-0002-6032-4686
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